I have some code that allows members to authenticate with their Active directory account against the AD-server and then in umbraco a dummy member is created for them and this dummy member is logged in. When I try to log the member out it doesnt seem to log the dummy member out and if I do checks in the front end with

Members.IsLoggedIn()

it returns true even if I have previously done

FormsAuthentication.SignOut();
Members.Logout();

To make matter worse if I check the values of the following statements

        Members.GetCurrentLoginStatus();
        Members.IsLoggedIn();

the first one has IsLoggedIn = false and the second one returns true

Members.GetCurrentMember()

returns null and I dont really know how to handle this, and I thought maybe it has something to do with the dummy member, and I was hoping for something like "Members.LogOut(username)" but it only has one version which takes zero arguments. Is there any other way to log an explicit member out or what would otherwise cause this behaviour?

FYI I don't know it this matters but I am using a custom membershipprovider for the AD-authentication, is this perhaps the cause? I am following this guide Active directory provider

/Alex